21443031232241 has 8 divisors (see below), whose sum is σ = 22135131819264. Its totient is φ = 20750955014160.

The previous prime is 21443031232229. The next prime is 21443031232247. The reversal of 21443031232241 is 14223213034412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21443031232241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21443031232198 and 21443031232207.

It is not an unprimeable number, because it can be changed into a prime (21443031232247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4295555 + ... + 7831848.

It is an arithmetic number, because the mean of its divisors is an integer number (2766891477408).

Almost surely, 2^{21443031232241} is an apocalyptic number.

It is an amenable number.

21443031232241 is a deficient number, since it is larger than the sum of its proper divisors (692100587023).

21443031232241 is a wasteful number, since it uses less digits than its factorization.

21443031232241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12184471.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21443031232241 its reverse (14223213034412), we get a palindrome (35666244266653).

The spelling of 21443031232241 in words is "twenty-one trillion, four hundred forty-three billion, thirty-one million, two hundred thirty-two thousand, two hundred forty-one".